Valve



B. J. GRIFFIN.

VALVE.

APPLICATION FILED FEB, 24, 1920.

Patented Oct. 25, 1921 UNITED STATES PATENT OFFICE.

VALVE.

Application filed February 24, 1920.

To all whom it may concern.

Be it known that I, BARTE J. GRIFFIN, a citizen of the United States, and resident of Springfield, in the county of Hampden and State of Massachusetts, have invented a new and useful Improvement in Valves, of which the following is a specification.

My invention is directed to improvements in that class of valves in which a normally closed inlet valve is opened by pressure exerted thereon due to the admission of liquid from the supply side of the valve where it will over-balance the pressure tending to hold the valve closed and will thus open the valve.

My invention is particularly directed to novel means for controlling the escape of the liquid pressure which holds the valve open so that the valve may close, said escape controlling means being regulable for causing the valve to close after different predetermined open intervals.

A practical embodiment of my invention is represented in the accompanying drawings, in which,

Figure 1 represents the valve in longitudinal central section.

Fig. 2 represents atransverse section taken in the plane of the line 11-11 of Fig. 1.

Fig. 3 represents a transverse section taken in the plane of the line IIIIII of Fig. 1.

Fig. 4 represents a transverse section taken in the plane of the line IV-IV of Fig. 1.

Fig. 5 represents a transverse section taken in the plane of the line VV of Fig. 1.

The valve casing is denoted by 1, and is herein shown of cylindrical form in cross section.

The inlet port is denoted by 2 and the dis charge port by 3. The service pipe 4 is secured to the inlet end of the casing by any suitable couplings 5. The discharge pipe 6 is secured to the discharge branch 7 of the casing by any suitable coupling 8. v

The end of the casing opposite the inlet end is provided with a suitable head comprising the outer head member 9, screwthreaded into the end of the casing and the inner head member 10 fitted to the bore 11 of the outer head member. A member 12 is screw-threaded on to the outer head member 9 and serves to retain the auxiliary valve 0 erating h nd e 13 in e g ge e t it he Specification of Letters Patent.

' from the head member Patented Oct. 25, 1921. Serial No. 360,677.

top of the stem 14 of the said auxiliary valve 15. The inlet valve 16 is connected to its actuating piston 17 by means of the hollow stem 18. This piston, together with the casmg forms a piston chamber 19.

The valve seat 20 for the inlet valve 16 is connected to the inner head member 10 by a tube 21 located within the hollow valve stem 18. The bore of this tube 21 is pro vided with a seat 22 for the manually operated auxiliary valve 15, the stem 14 of which projects upwardly through the bore of the tube and through a suitable stufiing box 23 in the head member 10, into engagement with the handle 13. The valve seat 20 is preferably provided with a three armed spider 24, terminating in a central lug 25 within the valve stem 18, to which the lower end of the tube 21 is screw-threaded. The valve stem 18 is provided with elongated slots 26 through which the arms of the spider 24 extend. Branch passages 27 lead through the valve seat and spider arm to the lower end of the bore of the tube 21, to open communication from the supply or inlet side of the valve 16 to the interior of the tube 21.

ranch passages 28 in the head member 10 lead from the upper end of the bore of the tube 21 into the piston chamber 19 for opening communication from the interior of the tube beyond the auxiliary valve 15 to the said piston chamber. A sleeve 29 projects 10, which sleeve surrounds and is spaced from the tube 21 leaving a passage 30. A port 31 through the wall of the valve stem 18 opens communication from the passage 30 to the interior of the casing on the discharge side of the inlet valve 16.

A restricted leakage passage 32 in the head member 10 leads from the piston chamber 19 to the passage 30 between the tube 21 and sleeve 29.

The piston chamber 19 is therefore always in open communication with the discharge side of the inlet valve through this restricted leakage passage, the passage 30 and the port 31.

I have provided means for regulating the size of this leakage passage, which means in the present instance is shown as a needle valve 33, screw-threaded in the head memseat. Also a coil spring 36 may be intro-1 duced in the bore of the tube 21 between the auxiliary valve 15 and the lug 25 for assisting the water pressure in holding the auxiliary valve closed against its seat 22. r

1 preferably make the wall of the inlet valve seat convex as shown at 37 and I prererably make the wall of the inlet valve convex as shown at 38 so as to prevent any tendencyof the valve to-stick to its seat.

In operation, the inlet valve 16, the operating handle 13 is either depressed or rocked. This movement will open the axuiliary valve 15 by forcing down the valve stem 14:. The liquid will then pass through the passages 27, the bore of the tube 21 past the valve 15 and through the branch passage 28 into the piston chamber 19. The pressure exerted by this liquid on the inlet valve piston 17 will move the piston along the piston chamber in a direction to open the inlet valve 16, and thereby permit the free passage of the liquid from the supply to the discharge. In the meantime, the liquid is permitted to escape from the piston chamber through the restricted leakage passage 32, the bore of the sleeve 29 and the port 31 to the discharge. As soon as enough liquid has escaped to remove the over-balancing pressure on the inlet valve piston l'i, the inlet valve 16 will automatically close. The period which the inlet valve may be permitted to remain open may-be regulated by restricting the leakage passage to a greater or lesser extent by screwing or unscrewing the needle valve 88.

It will thus be seen that I have provided a very simple and eflicient means for controlling the time which the inlet valve remains open and one which is easily regulable.

It is evident that this valve may be used in many different ways such for instance as in connection with the flushing of water closets, the supply of water to a wash basin, etc.

It is also evident that various changes may be resorted to in the construction, form and arrangement of the several parts with:

out departing from the spirit and scope or limited to. the particular embodiment herein shown and described, but

What. I claim is:

1. Acasing having inlet. and. discharge ports and a. piston chamber, a normally closed inlet valve having a hollow stem provi'dedw-ith. a piston shdable in the piston when it is desired to open chamber, a seat for the inlet valve, a passage leading through the valve seat and hollow stem from the inlet to the piston chamber, and a manually operated normally closed auxiliary valve for said passage.

2. A casing having inlet and discharge ports and a piston chamber, a normally closed inlet valve having a hollow stem provided with a piston slidable in the piston chamber, a seat for the inlet valve, a passage leading through the valve seat and hollow stem from the inlet to the piston chamber, a manually operated normally closed auxiliary valve for said passage, and a leakage passage leading from said piston chamber partly through said hollow stem into communication with said discharge port.

3. A casing having inlet and discharge 4. A casing havinginlet and discharge ports and a piston chamber, a normally closed inlet valve having a hollow stem provided with a piston slidable in the piston chamber, a seat for the inlet valve, said seat having a tube located within the hollow stem and spaced for a distancetherefrom, the passage through said tube c01 municating with both the inlet and piston chamber, and a manually operated normally closed auxiliary valve for saidpassage through said tube.

5. A casing having inlet and discharge ports and a piston chamber, a normally closed inlet valve having a hollow stem provided with a piston slidable in-the piston chamber, a seat for the inlet valve, said seat having a tube located within the hollowstem and spaced for a distance therefrom, the

passage through said tube communicating with both the inlet and piston chamber, a manually operated normally closed auxiliary valve for said passage through said tube, and a leakage passage leading from said piston chamber partly through said hollow stem around said tube into communication v with saiddischarge port. my invention; hence I do not wish to be 6. A casing having inlet and discharge ports and a piston chamber, a normally closed inlet valve having a hollow stem provided with a piston slidablein the piston with both the inlet and piston chamber, a manually operated normally closed auxiliary valve for said passage through said tube, and a regulable leakage passage leading from said piston chamber partly through said hollow stem around said tube into communication with said discharge port.

7. A casing having inlet and discharge ports and a piston chamber, a normally closed inlet valve havin a hollow stem provided with a piston slidable in the piston chamber, a valve seat, a head member, a tube located within the hollow stem and connecting the seat and head member, branch passages leading from the bore of the tube through the seat and head member to the inlet and piston chamber respectively, and a manually operated normally closed auxiliary valve for said bore.

8. A casing having inlet and discharge ports and a piston chamber, a normally closed inlet valve having a hollow stem provided with a piston slidable in the piston chamber, a valve seat, a head member, a tube located within the hollow stem and connecting the seat and head member, branch passages leading from the bore of the tube through the seat and head member to the inlet and piston chamber respectively, a manually operated normall closed auxiliary valve for said bore, an a leakage passage in said head member for said piston chamber.

9. A casing having inlet and discharge ports and a piston chamber, a normally closed inlet valve having a hollow stem provided with a piston slidable in the piston chamber, a valve seat, a head member, a tube located within the hollow stem and connecting the seat and head member, branch passages leading from the bore of the tube through the seat and head member to the inlet and piston chamber respectively, a manually operated normally closed auxiliary valve for said bore, and a regulable leakage passage in said head member for said piston chamber.

10. A casing having inlet and discharge ports and a piston chamber, a normally closed inlet valve having a hollow stem provided with a piston slidable in the piston chamber, a valve seat, a head member, a tube located within the hollow stem and connecting the seat and head member, branch passages leading from the bore of the tube through the seat and head member to the inlet and piston chamber respectively, a manually operated normally closed auxiliary valve for said bore, a sleeve extending from the head member, surroundin and spaced from the tube, a port in the ho low stem for bringing the interior of the sleeve into communication with the discharge side of the valve, and a leakage passage in said head member leading from the piston chamber to the interior of the sleeve.

11. A casing having inlet and discharge ports and a piston chamber, a normally closed inlet valve having a hollow stem provided with a piston slidable in the piston chamber, a valve seat, a head member, a tube located within the hollow stem and connecting the seat and head member, branch passages leading from the bore of the tube through the seat and head member to the inlet and piston chamber respectively, a manually operated normally. closed auxiliary valve for said bore, ,a sleeve extending from the head member, surrounding and spaced from the tube, a port in the hollow stem for bringing the interior of the sleeve into communication with the discharge side of the valve, and a regulable leakage passage in said head member leading from the piston chamber to the interior of the sleeve.

In testimony that I claim the foregoing as my invention, I have signed my name this nineteenth day of February, 1920.

BARTE J. GRIFFIN. 

